Windows is bad for everyday use because it sends all your data to Microsoft, you need to get a cloud account and can get banned from your system at any moment, it can install changes at any time etc. So basically you get humiliated every time you use your computer.

Windows is good for work though because if it starts updating during the work day, or breaks, you can do nothing and still get paid. And if it leaks your company data, it is not your problem also.

You can game on Linux for many years now. Windows is mostly mandatory if you play multiplayer games with anticheat

You’re either trolling or simply unaware but Steam and Proton allows you to run quite a bit of the Steam library on Linux with good performance.

ive been playing elden ring fantastically on the steam deck. its the game of the year from a couple years back

You have been living under a rock. Wine and proton are significantly faster than native windows. With valve's partnership with Archlinux last year, it's going to get even better

You don't need Windows for games since ages. Steam games run on Linux.

Not really if you ever tried. Barely playing music, games obviously don’t work if you ever tried playing games. (hint, game x not beeing terrible doesen’t mean ”it works”). like I said at the start this is fairly obvious.

I play AAA games on steam deck running stock steam OS. It's rock solid. Look at the sales of steam deck alone, it's quite successful